Encounter With A Scaly-skinned Entity

A few months back, I had a spooky experience at my hostel in the city of Lucknow, India. I had two roommates one of which was my cousin sister and the other was a senior in her 4th year of college.

Before I start my story I would like to tell you that often a house lizard would come into our room, because my sister and I were super scared, ma'am (senior) would have to shoo it away. A few days before my experience my cousin went home for a few days so me and ma'am were the only people in our room. Also, me and my sister had our beds kept close together whereas ma'am's bed was on the other end of the room.

One night, I had a weird dream that I don't remember but I was feeling lost and exhausted while sleeping. Suddenly, I woke up to a really loud sound which is hard to explain but it was something like a loud shhh, followed by a dolphin-like chirpy sound (house lizards also make a similar sound.) These two sounds were repeating themselves one after another and were exceptionally loud. I was confused where was it's source and thinking every person should be awake by now at such a loud sound.

Suddenly, my eyes went to the right of the room and I saw a very thin figure standing by the window facing maam's bed. It was standing sideways and was lean. The figure was really tall and the little light through the window that hit its chest-abdomen region showed blue-grey scale-like skin. It was unsettling but my initial instinct was it must be ma'am. I called the figure "ma'am?" a few times & asked it "are you shooing the lizard away?" (assuming the shhh sound to be the shooing sound & chirpy sound to be that of a lizard) I kept asking it for a few seconds before my eyes looked at ma'am's bed and I saw her feet. (There were tables and other stuff blocking a clear sight of her bed so while laying down in my bed I could only see the end of her bed.)

The realisation hit that she's sound asleep, to confirm I rose a little higher and saw her asleep, as I realized this the figure started disappearing. It got lighter and was gone within seconds.

The sound that was continuing also disappeared along with the disappearance of the figure. The sound disappeared just like a bird's sound is louder when close and fades away as the bird flies further away. But that sound faded away much quicker than a bird's would.

For the next few minutes I lay frozen like a dead body. I couldn't feel my heartbeat or my breathing at all. I knew I had encountered a being from a realm unknown but I knew nothing what it was or what was it doing. I was wondering if I was dead because I really felt no heartbeat and no breathing in me. In five or ten minutes I checked my phone and the time was around 4 am. I had college the next day so I went back to sleep. But even today I keep wondering what it was and I am desperate to find answers to my confusion.

If anyone has had a similar experience or if you have a theory or any questions regarding this experience of mine, please comment. I highly appreciate your involvement. Thanks.